package com.flyco.common.system.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;

import cn.hutool.core.util.ArrayUtil;
import com.flyco.common.api.vo.Result;
import com.flyco.common.constant.CommonConstant;
import com.flyco.modules.oss.entity.OSSFile;
import com.flyco.modules.oss.service.IOSSFileService;
import com.flyco.common.constant.CommonConstant;
import com.flyco.common.system.api.ISysBaseAPI;
import com.flyco.common.util.oConvertUtils;
import com.flyco.common.system.util.JwtUtil;
import com.flyco.common.util.CommonUtils;
import com.flyco.common.util.RestUtil;
import com.flyco.common.util.TokenUtils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;

import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.http.server.ServletServerHttpRequest;

import org.springframework.util.AntPathMatcher;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.servlet.HandlerMapping;
import org.springframework.web.servlet.ModelAndView;
import com.flyco.common.util.oss.OssBootUtil;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URLDecoder;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;
import java.util.UUID;

/**
 * <p>
 * 用户表 前端控制器
 * </p>
 *
 * @Author flyco
 * @since 2018-12-20
 */
@Slf4j
@RestController
@RequestMapping("/f/sys/common")
public class CommonController {

    @Autowired
    private ISysBaseAPI sysBaseAPI;

    @Value(value = "${flyco.path.upload}")
    private String uploadpath;
    @Value(value = "${flyco.path.httpBase}")
    private String httpBase;
    @Value(value = "${flyco.oss.rootPath}")
    private String rootPath;

    @Value(value = "${flyco.path.picDomain}")
    private String picDomain;
    /**
     * 本地：local minio：minio 阿里：alioss
     */
    @Value(value = "${flyco.uploadType}")
    private String uploadType;

    @Autowired
    private IOSSFileService ossFileService;

    /**
     * @return
     * @Author flyco
     */
    @GetMapping("/403")
    public Result<?> noauth() {
        return Result.error("没有权限，请联系管理员授权");
    }

    @PostMapping(value = "/ossUpload")
    public Result<?> ossUpload(HttpServletRequest request, HttpServletResponse response) {

        Result<OSSFile> result = new Result<>();
        try {

            MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;

            String dir = "";
            Map<String, String[]> uploadMap = multipartRequest.getParameterMap();
            if(ArrayUtil.isNotEmpty(uploadMap.get("dir")) && null != uploadMap.get("dir")[0]) {
                dir = uploadMap.get("dir")[0];
            }
            MultipartFile mf = multipartRequest.getFile("file");
            String nowday = new SimpleDateFormat("yyyyMMdd").format(new Date());
            String fileName = mf.getOriginalFilename();
            OSSFile ossFile = new OSSFile();
            ossFile.setFileName(fileName);
            String contentType = mf.getContentType();
            if (contentType.indexOf("/") > 0 ) {
                contentType = contentType.substring(0,contentType.indexOf("/"));
            }
            ossFile.setType(contentType);
            ossFile.setSize(mf.getSize());
            String url = "";
            if(dir.contains("goods")){
                url = this.uploadLocal(mf,rootPath + "/" + dir);
            }else{
                url = this.uploadLocal(mf,rootPath + "/" + dir + "/" + nowday);
            }
            ossFile.setUrl(url);
            ossFileService.save(ossFile);
            result.setMessage(url);
            result.setResult(ossFile);
            result.setSuccess(true);
        } catch (Exception e) {
            result.setSuccess(false);
            result.setMessage(e.getMessage());
            log.error(e.getMessage(), e);
        }
        return result;

    }

    /**
     * 文件上传统一方法
     *
     * @param request
     * @param response
     * @return
     */
    @PostMapping(value = "/upload")
    public Result<?> upload(HttpServletRequest request, HttpServletResponse response) {
        Result<?> result = new Result<>();
        String savePath = "";
        String bizPath = request.getParameter("biz");
        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
        MultipartFile file = multipartRequest.getFile("file");// 获取上传文件对象
        if (oConvertUtils.isEmpty(bizPath)) {
            if (CommonConstant.UPLOAD_TYPE_OSS.equals(uploadType)) {
                //未指定目录，则用阿里云默认目录 upload
                bizPath = "upload";
                //result.setMessage("使用阿里云文件上传时，必须添加目录！");
                //result.setSuccess(false);
                //return result;
            } else {
                bizPath = "";
            }
        }
        if (CommonConstant.UPLOAD_TYPE_LOCAL.equals(uploadType)) {
            //针对jeditor编辑器如何使 lcaol模式，采用 base64格式存储
            String jeditor = request.getParameter("jeditor");
            if (oConvertUtils.isNotEmpty(jeditor)) {
                result.setMessage(CommonConstant.UPLOAD_TYPE_LOCAL);
                result.setSuccess(true);
                return result;
            } else {
                savePath = this.uploadLocal(file, bizPath);
            }
        } else {
            savePath = sysBaseAPI.upload(file, bizPath, uploadType);
        }
        if (oConvertUtils.isNotEmpty(savePath)) {
            result.setMessage(savePath);
            result.setSuccess(true);
        } else {
            result.setMessage("上传失败！");
            result.setSuccess(false);
        }
        return result;
    }

    /**
     * 本地文件上传
     *
     * @param mf      文件
     * @param bizPath 自定义路径
     * @return
     */
    private String uploadLocal(MultipartFile mf, String bizPath) {
        try {
            String ctxPath = uploadpath;
            String fileName = null;
            File file = new File(ctxPath + File.separator + bizPath + File.separator);
            if (!file.exists()) {
                file.mkdirs();// 创建文件根目录
            }
            String orgName = mf.getOriginalFilename();// 获取文件名
            orgName = CommonUtils.getFileName(orgName);
            if (orgName.indexOf(".") != -1) {
                fileName = orgName.substring(0, orgName.lastIndexOf(".")) + "_" + System.currentTimeMillis() + orgName.substring(orgName.indexOf("."));
            } else {
                fileName = orgName + "_" + System.currentTimeMillis();
            }
            String savePath = file.getPath() + File.separator + fileName;
            File savefile = new File(savePath);
            FileCopyUtils.copy(mf.getBytes(), savefile);
            String dbpath = null;
            if (oConvertUtils.isNotEmpty(bizPath)) {
                dbpath = bizPath + File.separator + fileName;
            } else {
                dbpath = fileName;
            }
            if (dbpath.contains("\\")) {
                dbpath = dbpath.replace("\\", "/");
            }
            return httpBase+File.separator+dbpath;
        } catch (IOException e) {
            log.error(e.getMessage(), e);
        }
        return "";
    }

    /**
     * 预览图片&下载文件
     * 请求地址：http://localhost:8080/common/static/{user/20190119/e1fe9925bc315c60addea1b98eb1cb1349547719_1547866868179.jpg}
     *
     * @param request
     * @param response
     */
    @GetMapping(value = "/static/**")
    public void view(HttpServletRequest request, HttpServletResponse response) {
        // ISO-8859-1 ==> UTF-8 进行编码转换
        String imgPath = extractPathFromPattern(request);
        if (oConvertUtils.isEmpty(imgPath) || imgPath == "null") {
            return;
        }
        // 其余处理略
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            imgPath = imgPath.replace("..", "");
            if (imgPath.endsWith(",")) {
                imgPath = imgPath.substring(0, imgPath.length() - 1);
            }
            String filePath = uploadpath + File.separator + imgPath;
            File file = new File(filePath);
            if (!file.exists()) {
                response.setStatus(404);
                throw new RuntimeException("文件不存在..");
            }
            response.setContentType("application/force-download");// 设置强制下载不打开
            response.addHeader("Content-Disposition", "attachment;fileName=" + new String(file.getName().getBytes("UTF-8"), "iso-8859-1"));
            inputStream = new BufferedInputStream(new FileInputStream(filePath));
            outputStream = response.getOutputStream();
            byte[] buf = new byte[1024];
            int len;
            while ((len = inputStream.read(buf)) > 0) {
                outputStream.write(buf, 0, len);
            }
            response.flushBuffer();
        } catch (IOException e) {
            log.error("预览文件失败" + e.getMessage());
            response.setStatus(404);
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    log.error(e.getMessage(), e);
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    log.error(e.getMessage(), e);
                }
            }
        }

    }

    /**
     * 下载文件
     * 请求地址：http://localhost:8080/common/download/{user/20190119/e1fe9925bc315c60addea1b98eb1cb1349547719_1547866868179.jpg}
     *
     * @param request
     * @param response
     * @throws Exception
     */
    @GetMapping(value = "/download/**")
    public void download(HttpServletRequest request, HttpServletResponse response) throws Exception {
        // ISO-8859-1 ==> UTF-8 进行编码转换
        String filePath = extractPathFromPattern(request);
        // 其余处理略
        InputStream inputStream = null;
        OutputStream outputStream = null;
        try {
            filePath = filePath.replace("..", "");
            if (filePath.endsWith(",")) {
                filePath = filePath.substring(0, filePath.length() - 1);
            }
            String localPath = uploadpath;
            String downloadFilePath = localPath + File.separator + filePath;
            File file = new File(downloadFilePath);
            if (file.exists()) {
                response.setContentType("application/force-download");// 设置强制下载不打开            
                response.addHeader("Content-Disposition", "attachment;fileName=" + new String(file.getName().getBytes("UTF-8"), "iso-8859-1"));
                inputStream = new BufferedInputStream(new FileInputStream(file));
                outputStream = response.getOutputStream();
                byte[] buf = new byte[1024];
                int len;
                while ((len = inputStream.read(buf)) > 0) {
                    outputStream.write(buf, 0, len);
                }
                response.flushBuffer();
            }

        } catch (Exception e) {
            log.info("文件下载失败" + e.getMessage());
            // e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (outputStream != null) {
                try {
                    outputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }

    /**
     * @param modelAndView
     * @return
     * @功能：pdf预览Iframe
     */
    @RequestMapping("/pdf/pdfPreviewIframe")
    public ModelAndView pdfPreviewIframe(ModelAndView modelAndView) {
        modelAndView.setViewName("pdfPreviewIframe");
        return modelAndView;
    }

    /**
     * 把指定URL后的字符串全部截断当成参数
     * 这么做是为了防止URL中包含中文或者特殊字符（/等）时，匹配不了的问题
     *
     * @param request
     * @return
     */
    private static String extractPathFromPattern(final HttpServletRequest request) {
        String path = (String) request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
        String bestMatchPattern = (String) request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);
        return new AntPathMatcher().extractPathWithinPattern(bestMatchPattern, path);
    }

    /**
     * 中转HTTP请求，解决跨域问题
     *
     * @param url 必填：请求地址
     * @return
     */
    @RequestMapping("/transitRESTful")
    public Result transitRESTful(@RequestParam("url") String url, HttpServletRequest request) {
        try {
            ServletServerHttpRequest httpRequest = new ServletServerHttpRequest(request);
            // 中转请求method、body
            HttpMethod method = httpRequest.getMethod();
            JSONObject params;
            try {
                params = JSON.parseObject(JSON.toJSONString(httpRequest.getBody()));
            } catch (Exception e) {
                params = new JSONObject();
            }
            // 中转请求问号参数
            JSONObject variables = JSON.parseObject(JSON.toJSONString(request.getParameterMap()));
            variables.remove("url");
            // 在 headers 里传递Token
            String token = TokenUtils.getTokenByRequest(request);
            HttpHeaders headers = new HttpHeaders();
            headers.set("X-Access-Token", token);
            // 发送请求
            String httpURL = URLDecoder.decode(url, "UTF-8");
            ResponseEntity<String> response = RestUtil.request(httpURL, method, headers, variables, params, String.class);
            // 封装返回结果
            Result<Object> result = new Result<>();
            int statusCode = response.getStatusCodeValue();
            result.setCode(statusCode);
            result.setSuccess(statusCode == 200);
            String responseBody = response.getBody();
            try {
                // 尝试将返回结果转为JSON
                Object json = JSON.parse(responseBody);
                result.setResult(json);
            } catch (Exception e) {
                // 转成JSON失败，直接返回原始数据
                result.setResult(responseBody);
            }
            return result;
        } catch (Exception e) {
            log.debug("中转HTTP请求失败", e);
            return Result.error(e.getMessage());
        }
    }

    /**
     * 文件上传本地
     */
    private Result<?> uploadLocal(HttpServletRequest request, HttpServletResponse response) {

        Result<OSSFile> result = new Result<>();
        OSSFile ossFile = new OSSFile();
        try {

            MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
            String fileName = null;
            String dir = "other";
            Map<String, String[]> uploadMap = multipartRequest.getParameterMap();
            if (ArrayUtil.isNotEmpty(uploadMap.get("dir")) && null != uploadMap.get("dir")[0]) {
                dir = uploadMap.get("dir")[0];
            }
            MultipartFile mf = multipartRequest.getFile("file");
            String nowDay = new SimpleDateFormat("yyyyMMdd").format(new Date());
            String ctxPath = uploadpath;
            String relativePath = "/" + dir + "/" + nowDay + "/";
            File file = new File(ctxPath + relativePath);
            if (!file.exists()) {
                file.mkdirs();// 创建文件根目录
            }
            String orgName = mf.getOriginalFilename();// 获取文件名
            orgName = CommonUtils.getFileName(orgName);
            if (orgName.indexOf(".") != -1) {
                fileName = orgName.substring(0, orgName.lastIndexOf(".")) + "_" + System.currentTimeMillis() + orgName.substring(orgName.indexOf("."));
            } else {
                fileName = orgName + "_" + System.currentTimeMillis();
            }

            String savePath = file.getPath() + File.separator + fileName;
            File saveFile = new File(savePath);
            FileCopyUtils.copy(mf.getBytes(), saveFile);

            relativePath += fileName;
            if (file.getPath().indexOf("\\") > 0) {
                relativePath = relativePath.replace("\\", "/");
            }
            ossFile.setFileName(fileName.substring(0, fileName.lastIndexOf("_")));
            ossFile.setUrl(picDomain + relativePath);
            result.setMessage(ossFile.getUrl());
            result.setResult(ossFile);
            result.setSuccess(true);

        } catch (IOException e) {
            log.error(e.getMessage(), e);
            result.setSuccess(false);
        }
        return result;
    }


    /**
     * 生成UUID
     */
    @GetMapping(value = "/uuidGenerator")
    public Result<?> uuidGenerator() {
        return Result.ok(UUID.randomUUID().toString().replace("-", ""));
    }

}
